ref = [contactRows valueForKey: group];
path = gtk_tree_row_reference_get_path(ref);
gtk_tree_model_get_iter(GTK_TREE_MODEL(_roster_model),
ref = [contactRows valueForKey: group];
path = gtk_tree_row_reference_get_path(ref);
gtk_tree_model_get_iter(GTK_TREE_MODEL(_roster_model),